EN
W415-4077 / B / 01.31.23
15
venting requirements
12"
(30.5cm)
minimum
to grade
special vent installation (periscope termination)
33 1/8”
(84.1cm)
Use the periscope kit to locate the air termination above grade. The periscope must be installed so that when
final grading is completed, the bottom air slot is located a minimum 12” (30.5cm) above grade. The maximum
allowable vent length is 10’ (3m) for a fireplace and 8’ (2m) for a stove.
32” (81.3cm)
minimum
The minimum clearances around the horizontal vent pipe to the combustible material is 1" (25.4mm) in installations
with a minimum of 38” (96.5cm) vertical rise made immediately off the appliance collar and where the vent has
been reduced to a 4/7" from 5/8" at the appliance.
71 1/8"
(180.7cm)
38" min
(96.5cm)
4/7” vent clearance to combustibles
If necessary, 5/8” venting can be reduced to 4/7” venting (see “converting from 5/8” to 4/7” venting
section)
base of air collar
reducer
For 4”/7” (Use reducer kit A4758AK to transition from 5”/8” to 4”/7” venting)
When using Wolf Steel 4”7” venting components, use only approved Wolf Steel rigid / flexible components with
the following termination kits: wall terminal kit
GD-222
,
GD-222R
,
ST47U
or 1/12 to 7/12 pitch roof terminal kit
GD-110
, 8/12 to 12/12 roof terminal kit
GD-111
, flat roof terminal kit
GD-112
or periscope kit
GD-201
(for wall
penetration below grade). With flexible venting, in conjunction with the various terminations, use either the 5 foot
(1.5m) vent kit
GD-220
or the 10 foot (3.1m) vent kit
GD-330
. See 4/7” vent clearance to combustibles section for
specific venting parameters. See detailed instructions
40" min
(101.6cm)
